|
Brian, If you are serious about attempting or even delving into how to make a functional periscope, I'll send you a snap shot of what I can provide you with to form the lower section. This enclosure would be ideal for the lower prism and sightglass. It can be taken apart for servicing. David Bartsch > From: ojaivalleybeefarm@dslextreme.com > To: personal_submersibles@psubs.org > Subject: RE: [PSUBS-MAILIST] my optronic mast idea with sketch > Date: Fri, 5 Feb 2010 22:00:14 -0800 > > For a real basic periscope could one have two prisims and then lenses on > each end? I guess the lens part would take a bit of doing with the correct > focal lenght and all. Edmunds Scientific has quite a bit of optical > products. > > Brian > > -----Original Message----- > From: owner-personal_submersibles@psubs.org > [mailto:owner-personal_submersibles@psubs.org]On Behalf Of Jens Laland > Sent: Friday, February 05, 2010 5:53 PM > To: personal_submersibles@psubs.org > Subject: RE: [PSUBS-MAILIST] my optronic mast idea with sketch > > > Brian > > An optical periscope is actually a rather complicated and accurately built > instrument, see the US Navy WWII Submarine Periscope Manual, at > > http://www.maritime.org/fleetsub/ > > Here is a direct link to one of its fold-outs: > > http://www.maritime.org/fleetsub/pscope/foldout/fig4-16.htm > > I was very enthusiastic at a time and bought a lot of surplus optics from > these people, ref > > http://www.surplusshed.com/ > > but I have not used any of it in a periscope, yet. :) > > Best regards, > Jens Laland > > ** Sorry, I guess I wasn't very clear, I was thinking of a regular optical > ** periscope with prisims and a telescoping mast that would retract flush at > ** the top of the psub. the telescoping part would have to be made up of at > ** least three concentric tubes in order to get some hieght since you don't > ** have much room to work with in a small diameter sub. > ** > ** Brian > > > > > > ************************************************************************ > ************************************************************************ > ************************************************************************ > The personal submersibles mailing list complies with the US Federal > CAN-SPAM Act of 2003. Your email address appears in our database > because either you, or someone you know, requested you receive messages > from our organization. > > If you want to be removed from this mailing list simply click on the > link below or send a blank email message to: > removeme-personal_submersibles@psubs.org > > Removal of your email address from this mailing list occurs by an > automated process and should be complete within five minutes of > our server receiving your request. > > PSUBS.ORG > PO Box 53 > Weare, NH 03281 > 603-529-1100 > ************************************************************************ > ************************************************************************ > ************************************************************************ > > > > > ************************************************************************ > ************************************************************************ > ************************************************************************ > The personal submersibles mailing list complies with the US Federal > CAN-SPAM Act of 2003. Your email address appears in our database > because either you, or someone you know, requested you receive messages > from our organization. > > If you want to be removed from this mailing list simply click on the > link below or send a blank email message to: > removeme-personal_submersibles@psubs.org > > Removal of your email address from this mailing list occurs by an > automated process and should be complete within five minutes of > our server receiving your request. > > PSUBS.ORG > PO Box 53 > Weare, NH 03281 > 603-529-1100 > ************************************************************************ > ************************************************************************ > ************************************************************************ > Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. Sign up now. |